So its looking like they are going to be announcing stuff in Japan that will trickle down to NA and EU what with the talk of translations and such. I imagine the biggest news we could get would be a schedule for the next big update for 3DS and maybe the reveal of the 3DS Mario game. I doubt we'll see a lot of news regarding localization of titles unless its something like Fire Emblem, where they'll talk about it in the Japanese event and then mention its localization in the others.

Sakurai has also hinted at Kid Icarus info being a part of this, so we'll probably see some more AR cards show up.

The NA stuff will just be the Japanese stuff that applies to us in text form on Twitter and Facebook (bleh and double bleh). The Euro presentation will likely be the relevant parts of the Japanese event with subtitles, like the last one. Be nice if NoA could subtitle videos, but whatever.

Some decent accouterments from the Japanese video. New eShop pokemon games, one looks like a cross between Pokemon Snap and Face raiders, the other an enhanced Pokedex 3D for B&W2. Next firmware update will include the ability to make folders on the home screen, a huge plus for me personally, as well as patches coming down to fix things in games like Mario Kart 7. Nintendo will also be celebrating Kirby's 20th anniversary with special games released on Wii.

Biggest news is definitely New Super Mario Bros. 2, for 3DS. Same 2.5D style, but we saw the Raccoon suit power up (ears and tail) as well as a golden Mario. Releasing this August in Japan. Oh, and Animal Crossing 3D will be releasing this fall as well.